The G6 is a wheeled 155mm self-propelled howitzer of South African origin. The G6 is one of the few wheeled heavy self-propelled howitzers and is known for its long range and accuracy. The G5 towed howitzer and G6 self-propelled howitzer were developed in the early 1980's in response to the poor range and lethality of the South African artillery during the conflict in Angola. It entered South African service in 1988. The G6 is nicknamed Rhino in South African service.

The G6 is a unique vehicle and is one of the heaviest wheeled combat vehicles. The driver is seated at the front with the engine behind him. The turret is fitted at the rear and houses the commander, gunner and three loaders. Due to the wheeled chassis outriggers are required to provide a stable firing platform.

The G6 is fitted with a 45-caliber 155mm howitzer. This provides the G6 with a long range and good accuracy. Standard rounds are fired out to 30km, base bleed round out to 39km and rocket assisted round out to 50km. The maximum rate of fire is A total of 45 rounds are carried in the vehicle. The G6-52 is fitted with a L/52 ordnance and improved loading system. A machine gun is fitted to the turret roof for self-defense.

The G6 is operated from under full armor protection. The steel hull protects the crew from small arms fire and shell splinters. Over the frontal arc it is protected against 14.5mm rounds. The G6 is mine resistant but not as well as other South African vehicles as it has no V-shaped hull. NBC and fire suppressions systems are fitted as well as 8 smoke dischargers.

The wheeled chassis gives the G6 a very good mobility. Due to the large tires the G6 has a very good cross country performance. Both in the field and on the road the G6 is very fast. A 518hp diesel engine provides propulsion and an APU powers the vehicle when the engine is not running.

The G6 has seen limited export sales. This is not only due to the Apartheid regime that lasted until 1994. Many Western nations opt for Western alternatives and most other nations cannot afford such a high quality system. Only a relatively small quantity has been produced and the only exports have been to the Middle East.